The public body advised people to report incidents to them or Citizens Advice.
A spokesman said: “We have had reports of two males cold calling in the South Lakes and Barrow area offering landscaping services and interested in buying caravans, campers and 4x4’s.
“As always please be cautious when approached on your doorstep by callers or traders who you don’t know.
“If you have agreed a contract you should be given a written 14 day cooling off period.
“Please look out for your vulnerable family, friends and neighbours and report incidents to us on 0808 223.”
Trading Standards use the information given to them to investigate unfair trading and illegal business activity, like rogue traders and scams.